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  • 1
    Electronic Resource
    Electronic Resource
    Crosslinking behaviour of diolmodified epoxies (1988)
    Springer
    Polymer bulletin 20 (1988), S. 183-188 
    Details
    ISSN: 1436-2449
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Summary Diglycidyl ether of bisphenol A (BADGE) reacts with aliphatic alcohols to form different products, depending on the type of accelerator. In the presence of magnesium perchlorate the reaction mechanism is nearly independent of the temperature. Using N,N-dimethylbenzylamine (DMBA) as accelerator, different reaction mechanisms can be observed with increasing temperature. These conclusions were drawn by kinetic investigations of the system BADGE/butane-1-ol/accelerator involving HPLC-measurements of reaction products.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00256113
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  • 2
    Electronic Resource
    Electronic Resource
    Crosslinking behaviour of diolmodified epoxies (1989)
    Springer
    Polymer bulletin 22 (1989), S. 221-226 
    Details
    ISSN: 1436-2449
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Summary Diglycidyl ether of bisphenol A (BADGE) reacts with aliphatic alcohols to form different products, depending on the type of accelerator and the alcohol mole fraction. Using liquid state C-13 NMR different reactive groups as oxirane rings, primary and secondary hydroxyl groups were detected in dependence of the epoxide consumption. Crosslink and junction point resonances were identified by varying the cure state.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00282844
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  • 3
    Electronic Resource
    Electronic Resource
    Oligomerization of phenyl glycidyl ether in the presence of ZnCl2 (1987)
    Springer
    Polymer bulletin 17 (1987), S. 31-36 
    Details
    ISSN: 1436-2449
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Summary In the presence of ZnCl2 phenyl glycidyl ether reacts to different products owing to the ring-opening reaction of the oxirane and the cleavage of the ether bond. Using HPLC and offline mass spectrometry most of the reaction products could be identified. A reaction scheme and the supposed reaction mechanism were described involving the formation of chlorine — containing oligomers and low molecular weight by — products resulting from the cleavage of the ether bond of the monomer. Conclusions were drawn for original polyfunctional epoxy resin systems.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00955880
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  • 4
    Electronic Resource
    Electronic Resource
    Crosslinking behaviour of diolmodified epoxies (1988)
    Springer
    Polymer bulletin 20 (1988), S. 189-194 
    Details
    ISSN: 1436-2449
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Summary Diglycidyl ether of bisphenol A (BADGE) reacts with aliphatic alcohols to form different products, depending on the type of accelerator. Using isothermal and dynamic DSC, magnesium perchlorate proved to be a more selective accelerator in comparison with N,N-Dimethylbenzylamine (DMBA). In the presence of DMBA, Arrhenius plots of log tc (tc-cure times) versus inverse cure temperature show a changing reaction order over a wide range of temperatures.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00256114
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  • 5
    Electronic Resource
    Electronic Resource
    Epoxid-Reaktionen. V.IV. Mitt.: M. FEDTKE, M. TARNOW u. R. ZANDER, Plaste Kautsch. 28, 444 (1981). Untersuchung von Teilreaktionen der Epoxidharz- Vorprodukt-bildung durch chromatographische MethodenHerrn Prof. Dr. Dr. h. c. H. G. O. Becker zum 60. Geburtstag gewidmet (1982)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 324 (1982), S. 429-442 
    Details
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Epoxide Reactions. V. Chromatographic Studies of Some Reactions Involving Epoxide FormationsA reverse phase liquid chromatographic method has been applied for the quantitative determination of some products in epoxide forming reactions. The reaction of chlorohydrinethers of bisphenol A with aqueous sodium hydroxide has been studied quantitatively under different conditions.The influence of side products originating from epichlorohydrin on the course of the main reaction is discussed.In addition preparative liquid chromatographic methods have been developed to separate epoxide oligomers and some chlorohydrinethers of bisphenol A.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prac.19823240310
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  • 6
    Electronic Resource
    Electronic Resource
    Molmassebestimmung an Polyamiden und Reaktionsprodukten aus ε-Caprolactam und Phenylglycidether (1996)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 338 (1996), S. 311-319 
    Details
    ISSN: 0941-1216
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Molar Mass Determination on Polyamides and on Reaction Products from ε-Caprolactam and Phenyl Glycidyl EtherTerminal groups (-NH2, -COOH, -OH (-OH from termination reaction with epoxides)) of aliphatic oligo- and polyamides were titrated to determine the corresponding molar masses. ε-Caprolactam terminal groups were hydrolyzed to form -COOH permitting subsequent titration. The same samples were measured by using capillary viscometry, vapour pressure osmometry and size exclusion chromatography. It was shown that the molar masses obtained depend on the reaction process of the polyamide formation (anionic process with Na-caprolactam as initiator and activated anionic process with Na-caprolactam/N-acetylcaprolactam as initiator) and on the analytical method used. Molar masses from titration of terminal groups correspond to molar masses from capillary viscometry in sulfuric acid as solvent.
    Additional Material: 14 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prac.19963380163
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  • 7
    Electronic Resource
    Electronic Resource
    Hochdruckflüssigkeitschromatographie (HPLC) von DGEBA-Anilin-Prepolymeren. Unvernetzte Epoxid-Amin-Additionspolymere. 109. Mitteilung über unvernetzte Epoxid-Amin-Additions-polymere siehe [1] (1986)
    Weinheim : Wiley-Blackwell
    Acta Polymerica 37 (1986), S. 272-278 
    Details
    ISSN: 0323-7648
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: Telechelic prepolymers with glycidyl endgroups were prepared by copolymerization of diglycidyl ether of bisphenol A (DGEBA) and aniline under the condition of an excess of DGEBA. n̄ depends on the molar ratio of the monomers and was varied between 0.1 and 5.0. The chemical structure of the prepolymers was determined by C, H, N elemental analysis, IR and 1H, 13C-NMR spectroscopy. Mn was measured by vapour pressure osmometry. By means of reversed-phase HPLC using a Lichrosorb RP-18 column with water/acetonitrile gradient elution mode an excellent separation of the prepolymers into up to 20 oligomer fractions was achieved.
    Notes: Die Polyaddition von Bisphenol-A-diglycidylether (DGEBA) an Anilin führt bei DGEBA-Überschuß zu telechelen Prepolymeren mit Glycidylendgruppen. n̄ hängt vom Molverhältnis der Monomere ab und wird von 0,1 bis 5,0 variiert. Die chemische Struktur der Prepolymere wird durch C,H,N-Analysen, IR-,1H- und 13C-NMR-Spektren belegt, und ihre Mn -Werte werden durch Dampfdruckosmometrie gemessen. Mittels Umkehrphasen-HPLC an Lichrosorb RP-18 wird durch Anwendung von Wasser/Acetonitril-Gradienten-Elution eine ausgezeichnete Auftrennung der Prepolymere in mehr als 20 Oligomer-Fraktionen erreicht.
    Additional Material: 9 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/actp.1986.010370505
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  • 8
    Electronic Resource
    Electronic Resource
    Reaktionen polyfunktioneller Cyansäureester mit polyfunktionellen Glycidethern. 1. Identifizierung der gebildeten StrukturelementeHerrn Professor Dr. Dr. h. c. Hermann Klare zum 80. Geburtstag gewidmet (1989)
    Weinheim : Wiley-Blackwell
    Acta Polymerica 40 (1989), S. 335-340 
    Details
    ISSN: 0323-7648
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: The chemical structures formed at the reaction of glycidylethers with aromatic cyanates were identified. In dependence on the molar ratio of the monomers, different parts of triazines, alkylisocyanurates, oxazolidinones, phenols, secondary hydroxyl groups, and double bonds were obtained.
    Notes: Die bei der Reaktion von Glycidethern und aromatischen Cyansäureestern gebildeten chemischen Strukturen wurden identifiziert. In Abhängigkeit vom Stoffmengenverhältnis der Monomere wurden unterschiedliche Anteile an Triazinen, Alkylisocyanuraten, Oxazolidinonen, Phenolen, sekundären Hydroxylgruppen und Doppelbindungen erhalten.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/actp.1989.010400509
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  • 9
    Electronic Resource
    Electronic Resource
    Zur Reaktion von Epoxiden mit Hydroxylverbindungen. IXVI. Mitteilung über Epoxidreaktionen. XV. Mitt.: Fedtke, M., und Domaratius, E.: Plaste und Kautschuk 32 (1985) 443 (1986)
    Weinheim : Wiley-Blackwell
    Acta Polymerica 37 (1986), S. 24-28 
    Details
    ISSN: 0323-7648
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: The reaction of glycidethers with monohydric hydroxyl compounds in the presence of Mg(ClO4)2 yields lower oligohydroxyethers. Primary and secondary hydroxyl groups react with the same rate. Thus, in the reaction of diglycidethers highly branched oligomers are formed, which crosslink just before the complete conversion of the epoxide.
    Notes: Die Umsetzung von Glycidethern mit monofunktionellen Hydroxylverbindungen führt in Gegenwart von Mg(ClO4)2 zu niederen Oligohydroxyethern. Dabei reagieren sowohl primäre als auch sekundäre Hydroxylgruppen mit gleicher Geschwindigkeit, so daß bei difunktionellen Glycidethern stark verzweigte Oligomere entstehen, die kurz vor dem vollständigen Verbrauch des Epoxides vernetzen.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/actp.1986.010370107
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  • 10
    Electronic Resource
    Electronic Resource
    Zur Reaktion von Epoxiden mit Hydroxylverbindungen. IITeil I: siehe [1]XVIII. Mitteilung zu Epoxidreaktionen; XVII. Mitt.: Fedtke, M., Rudolf, A., Thiele, G., und Tänzer, W.: Z. Chemie 25 (1985) 177 (1986)
    Weinheim : Wiley-Blackwell
    Acta Polymerica 37 (1986), S. 70-72 
    Details
    ISSN: 0323-7648
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Physics
    Description / Table of Contents: In the reaction of bisphenol-A-diglycidether with butane-1,4-diol at different ratios and catalysis by Mg(ClO4)2 only a maximum of 25% of the diol was found to be involved in the network. By thermogravimetric and dynamic-mechanical measurements it was proved that an excess of the diol acts as a nonreactive plasticizer in the network.
    Notes: Bei der Umsetzung von Bisphenol-A-diglycidether mit Butan-1,4-diol in verschiedenen Molverhältnissen und Katalyse durch Mg(ClO4)2 wurde festgestellt, daß das Diol nur zu maximal 25% in das Netzwerk eingebaut wird. Durch thermogravimetrische und dynamisch-mechanische Messungen konnte bestätigt werden, daß überschüssiges Diol im Netzwerk als äußerer Weichmacher vorliegt.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/actp.1986.010370202
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